Thanks for the help everyone! It's great to have some support and as I learn more I'll do my best to help others new to 4runner maintenance and repair.
I purchased it from a wholesaler who picked it up from a dealer. He claimed to know nothing about the history. It would appear the vehicle had been poorly maintained for the last few years. No idea how often they changed the oil. It had fresh oil when I bought it.
I'm hoping that it was...
I disturbed my engine sludge, need advice.
I just purchased my first 4 runner!
99 sr5 3.4 auto 135k miles. It has some issues but the price was quite low.
I'm changing my valve cover gaskets and noticed some sludge deposits on the covers and on the heads. Being new to doing more than basic...